package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.config.MybatisPlusConfig;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

     //员工登录
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1、将页面提交的密码password进行md5加密处理
        String password = DigestUtils.md5DigestAsHex(employee.getPassword().getBytes());
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        lqw.eq(employee.getUsername() != null, Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(lqw);
        //3、如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("用户名或密码错误");
        }
         //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("用户名或密码错误");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已被禁用");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());
        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
      /*   补全信息   因重复出现 已抽取
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //获得当前登录用户的id
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);*/
        employeeService.save(employee);
        return R.success("员工添加成功");
    }

    /**
     * 分页查询
     */
    @GetMapping("/page")
    public R limit(int page, int pageSize, String name) {
        //构建搜索条件 分页数据
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper();
        Page pageInfo = new Page(page, pageSize);
        //添加过滤条件 - name进行模糊匹配
        lqw.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件 - 更新时间倒序排序
        lqw.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo, lqw);
        return R.success(pageInfo);
    }


    /**
     * 修改
     * @param employee
     * @return
     */
    @PutMapping
    public R update( @RequestBody Employee employee) {
  /*   补全信息   因重复出现 已抽取
        //改修改时间
        employee.setUpdateTime(LocalDateTime.now());
        //获取修改人,补充到库表
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateUser(empId);*/
        //执行修改
        employeeService.updateById(employee);
        return R.success("修改成功");
    }

    /**
     * 根据id查
     * @param id
     * @return
     */
    @GetMapping("{id}")
    public R getById(@PathVariable Long id) {
        Employee byId = employeeService.getById(id);
        if (byId != null) {
            return R.success(byId);
        }
        return R.error("没有查询到对应员工信息");
    }

}
